Choose whether members see how full each class is ("5/10 booked") on the schedule.
Go to Settings → "Scheduling" section. The "Show spots remaining" card is at the top. (The studio owner and any manager with the Settings permission can change it — it no longer lives under the owner-only "Booking Credit Requirement" card.)
Turn it off to hide the per-class booking count from members and visitors. A class still shows "Full" at capacity so they know to join the waitlist.